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2 years ago

A certain type of brass contains 65% copper. How many pounds of copper are contained in 120 pounds of the brass?

Mathematics

1 answer:

soldier1979 [14.2K]2 years ago

5 0

The amount of cooper that are contained in 120 pounds of the brass is equal to 78 pounds.

Let the amount of copper be C.

Given the following data:

Quantity of brass = 120 pounds

Percentage of copper = 65%

To calculate the amount of cooper that are contained in 120 pounds of the brass:

In this this exercise, you're required to determined how many pounds of copper can be found in 120 pounds of the brass. Thus, we would solve for the percentage of copper contained in this type of brass.

$Copper = \frac{65}{100} \times 120\\\\Copper = 0.65 \times 120$

Copper, C = 78 pounds

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Which expression uses the associative property to make it easier to evaluate? (50points)

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The associative property states that for any three terms that are being multiplied, different order of multiplication (i.e. which two terms are multiplied first) will give the same answer.

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